Hydraulic elevator



2 Sheets-Sheet 1. A. F. KNORP.

HYDRAULIC ELEVATOR.

' (No Model.)

Patented July 15, 1884.

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A.P.'K1 I0RP.

HYDRAULIC ELEVATOR.

nted July 15, 1884.

Pate

UNITED S'rrrrrs PATENT @rrrcs.

ALBERT F. KNORP, OF SAN FRANCISCO, CALIFORNIA.

HYDRAULIC ELEVATOR. Y

SPECIFICATION forming part of Letters Patent No. 302,003, dated July 15,1884.

Application filed August 13, 1883. (No model.)

exact description thereof.

My invention relates to certain improvements in that class of elevatorsin which the cage or platform is supported upon the top of avertically-moving column or piston-rod, which is forced up, so as toelevate the cage, by the pressure of a column of water; and it consistsof a means for holding the sections together which form the column, andpreventing their separation in case the joints become broken ordetached.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a vertical section of a hollow ramrod withmy attachment: Fig. 2 is a similar section showing a solid ram with mydevice. Fig. 3 is a view of one of the end yokes. Fig. 4 is a view ofone of the interior guides to steady the rod. Fig. 5 is an enlarged Viewshowing one form of connection for the ends of the rods. Fig. 6 is anelevation showing the cage and counter-weights.

A A are tubular or solid sections forming an elevator-column, and havingjoints at B, by which the sections are united and held together in asingle shaft. These sections maybecome separated by accident, and myinvention is designed'to prevent the lower part from becoming detachedand falling down, or the cage from being carried up by thecounter-weights.

' It consists of a tube or rod, G, which extends up through the centerof the column.

' When these rods are used, they inay be made to the proper tension bynuts F, thus holding,

of solid lengths,having the ends bent into hook form, so as to beunited,asshown at D. If the column be made of wood or other material and solid,as shown in Fig. 2, a-hole is bored centrally through the length of eachsection, and the rods are passed through this hole, extending from topto bottom of the column. Atthe top and bottom of the column are fixedheads or yokes E, through which the rods pass, and where they may bedrawn the wholerigidly together. The columns are 'vators one of the mostfatal.

usually made of hollow tubes, twelve or eighteen feet long, screwedtogether and turned to a smooth finishupon the outside, so as to "passwater-tight through a stuffing-box, K, in the top of the tube in whichthey move. They are very heavy, and when the cage is near the third orfourth floor, with some sixty or seventy feet of the column forced outof the tube,

the power necessary to force them up is greatly increased. To partlyovercome this, heavy counter-weights Hare attached to ropes I,

passing over pulleys at the top of the building, and thence down to thecage, to which they are attached, the said cage resting upon the top ofthe column, as shown in Fig. 6.

. N ow the'tubes forming the column are there, and thejoints between thesections cannot be as strong as desired, either in a hollow or a solidcolumn, and if by accident the column should. separate, the lower partmight sink rapidly into its tube; but the cage, released from itsweight,would be shot upward by the action of the counter-weights, andthus render what appears at first sight the safest of ele 7 5 Myinvention serves to hold the whole length of the column togetherbymieans of these interior bindingrods extending from top to bottom, andso fixed at eachendthat even if the column should so separate it couldnot fall or producea dangerous accident. If the column be made tubularand" hollow, guides or stays G are secured within it at intervals,through which the rods, pass, and, are thus prevented from swaying fromside to side,and are held in their central position.

If desired, the central rod may be made of tubular iron pipes havingstout couplings at theirmeeting ends, and secured in yokes at the endsof the column, as before described.

Havingthus described my invention, what I claim as new, and desire tosecure by Letters Patent, is l 1. In an elevator consisting of avertically- Inoving plunger or ram, a means for holding the sectionstogether, consisting of a central rod extending from end to end,andsecured in yokes or end pieces, substantially as herein described,

2. In an elevator consisting of plunger or ram sections unitedlongitudinally, the'central IO rior rod extending through the column,and

secured in yokes or end pieces, so that the tensile strain is exerted tohold the sections of the column together.

In witness whereof I have hereunto set my hand.

ALBERT F. KNORP.

Witnesses:

S. H. NoURsE, J 0s. A. BAYLEss.

